本文選題：LED + 多芯片　； 參考：《哈爾濱理工大學(xué)》2015年碩士論文

【摘要】：發(fā)光二極管（Light Emitting Diode, LED）是一種新型固態(tài)光源。具有體積小、重量輕、價(jià)格低、壽命長、綠色環(huán)保等特點(diǎn)，在背光照明、道路交通、交通工具、顯示屏等領(lǐng)域有著廣泛的應(yīng)用。成本低、光效高、能耗低的多芯片白光LED在照明領(lǐng)域廣泛應(yīng)用，引起人們關(guān)注。目前，LED處于發(fā)展初期階段，使用壽命、價(jià)格及光色一致性制約LED發(fā)展。本文以LED單色光光譜為研究基礎(chǔ)，研究LED光電參數(shù)對器件性能的影響及提高晶圓芯片利用率的LED多芯片混Bin設(shè)計(jì)方法。 本設(shè)計(jì)基于LED晶圓上不同Bin的藍(lán)光芯片，研究混Bin對LED光輻射通量、色坐標(biāo)和波長的影響，通過混Bin試驗(yàn)，，不同波長的芯片混合使用，采用0.5m小積分球，測量試驗(yàn)樣品的光電參數(shù)及電流和溫度對光電參數(shù)的影響。研究不同Bin兩顆芯片單獨(dú)點(diǎn)亮后疊加光譜參數(shù)與兩顆芯片混Bin后光譜參數(shù)，結(jié)果表明，兩種情況的光輻射通量和色坐標(biāo)的理論計(jì)算與測試數(shù)據(jù)相同。 建立LED芯片光輻射通量、波長和色坐標(biāo)之間關(guān)系，利用關(guān)系式可挑選混Bin芯片，并作為多芯片LED選擇混Bin芯片的標(biāo)準(zhǔn)，試驗(yàn)結(jié)果與理論計(jì)算結(jié)果一致。 COB封裝方式通常包含LED兩顆以上LED芯片，通過混Bin關(guān)系式，計(jì)算藍(lán)光芯片參數(shù)，方便挑選芯片且可保證多芯片封裝時(shí)光源的光色一致性，提高晶圓芯片利用率，降低LED成本。 在藍(lán)光LED+不同色熒光粉實(shí)現(xiàn)白光LED條件下，通過混Bin關(guān)系式計(jì)算藍(lán)光芯片參數(shù)，預(yù)估混Bin后LED的光電參數(shù)，可將不同Bin的LED芯片封裝在同一熒光膜下，提高熒光粉的利用率，降低白光LED成本。
[Abstract]:Light emitting Diode (LED) is a new solid state light source. With small size, light weight, low price, long life, green environmental protection and other characteristics, it has been widely used in backlight lighting, road traffic, transportation, display screen and other fields. Multichip white LED with low cost, high light efficiency and low energy consumption has been widely used in lighting field. At present, LED is in the early stage of development, service life, price and color consistency restrict the development of LED. Based on the monochromatic optical spectrum of LED, the effect of LED optoelectronic parameters on the performance of the device and the design method of LED multi-chip Bin mixing to improve the utilization ratio of wafer chips are studied in this paper. Based on the blue chip of different Bin on LED wafer, the influence of mixing Bin on the luminous flux, color coordinate and wavelength of LED is studied. Through mixing Bin experiment, the chip with different wavelengths is mixed with 0.5m small integral sphere. The photoelectric parameters of test samples and the effects of current and temperature on the photoelectric parameters were measured. The spectral parameters of two different Bin chips were studied. The results show that the theoretical calculation of the luminous flux and color coordinates of the two kinds of chips is the same as that of the measured data. The relationship among luminous radiation flux, wavelength and color coordinate of LED chip is established. The hybrid Bin chip can be selected by using the relation formula, and it is regarded as the standard of selecting mixing Bin chip for multi-chip LED. The experimental results are consistent with the theoretical results. The COB package usually contains two or more LED chips. The parameters of the blue chip are calculated by mixing Bin relation. It is convenient to select chips and ensure the consistency of light and color of light source in multi-chip packaging, improve the utilization ratio of wafer chips, and reduce the cost of LED. Under the condition that white LED is realized with different color phosphors of blue LED, the parameters of blue LED chip are calculated by mixing Bin relation formula, and the optoelectronic parameters of LED after mixing Bin are estimated. The LED chips of different Bin can be encapsulated under the same fluorescent film, and the utilization rate of phosphor can be improved. Reduce the cost of white LED.
【學(xué)位授予單位】：哈爾濱理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TN312.8

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本文編號：2102378